Metrohm 746 VA Trace Analyzer User Manual
Page 98
4.2 Lead determination with standard addition
746 VA Trace Analyzer / 747 VA Stand
4-13
dU.front/dU.rear
Determination of base points: automatic
S.front/S.rear
Determination of the slopes at the base points:
automatic
I.scale
Scaling of the current axis: automatic
U.div
Division of the voltage axis for printout
Quantity
Evaluation quantity: peak height
•
Press the softkey
< >> >
. The subpage of "SUBSTANCES" appears with
the parameters for calibration of the substance lead:
Method: TESTPb SUBSTANCES
Pb - SegPb
Calibration 1997-03-20 16:23 Coefficients
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД
ДДДДДДДДДДДДДДДДДДДДДДДД
Technique std.add Y.reg -1.957e-07
Curve type linear Slope -3.907e-05
Nonlin.
Mean dev. 2.137e-09
Additions
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Soln.name PbStd
ДДДДДДДДДД
ДДДДДДДДДД
Mass conc. 1 g/L g/L g/L g/L
Range min g/L g/L g/L g/L
Range max g/L g/L g/L g/L
M.conc./cm g/L g/L g/L g/L
Modify
column
Modify
line
Select
subst.
Link to
segment
Delete
subst.
Subst.
name
>>
The dialog page "SUBSTANCES" contains a subpage with the parameters for the
calibration. Here, the type of calibration (standard addition, calibration curve or internal
standard) and the required solutions are defined, in addition the results of the last
calibration are displayed.
You will find further information regarding this dialog page in section 5.6.3.
•
The following is a brief explanation of the most important parameters:
Technique
Calibration technique: standard addition
Curve type
Curve type for calculation of the standard addition:
linear
Soln.name
Name of the standard addition solution
PbStd
called up in the instruction
ADD>M
Mass conc.
Mass concentration of the standard addition solution:
1 g/L
4
Switch to dialog page "CALCULATION"
•
Press the yellow
"CALCULATION" appears for calculation of the final results: